CN112318393A - Clamping device for fixing fuel sample in induction heating high-temperature foaming experiment - Google Patents
Clamping device for fixing fuel sample in induction heating high-temperature foaming experiment Download PDFInfo
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- CN112318393A CN112318393A CN202011133954.1A CN202011133954A CN112318393A CN 112318393 A CN112318393 A CN 112318393A CN 202011133954 A CN202011133954 A CN 202011133954A CN 112318393 A CN112318393 A CN 112318393A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
- G21C17/06—Devices or arrangements for monitoring or testing fuel or fuel elements outside the reactor core, e.g. for burn-up, for contamination
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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Abstract
The invention discloses a clamping device for fixing a fuel sample in an induction heating high-temperature foaming experiment, wherein the bottom ends of a first group of stand columns in two groups of stand columns are fixed on a base, the bottom ends of a second group of stand columns are movably arranged relative to the base, and the second group of stand columns are driven by a driving piece or a driving piece to move towards or away from the first group of stand columns; brackets are arranged at the top ends of the two groups of upright posts, and the upper surface of each bracket is provided with a threaded hole; one end of the clamping screw is screwed into the threaded hole; the upper surfaces of the two brackets are used for placing a sample, the horizontal two sides of the sample are clamped between the two clamping screws on the brackets, and the vertical two sides of the sample are clamped between the end caps of the clamping screws and the upper surfaces of the brackets; the movement of the second set of uprights relative to the first set of uprights is used to adjust the distance between the two clamping screws. The invention establishes the on-line observation technology of the high-temperature foaming phenomenon of the fuel sample, and provides solid guarantee for accurately obtaining the foaming threshold temperature of the fuel element sample and improving the utilization efficiency of the fuel element.
Description
Technical Field
The invention relates to the technical field of nuclear fuel circulation and irradiation effects, in particular to a clamping device for fixing a fuel sample in an induction heating high-temperature foaming experiment.
Background
The irradiated dispersed fuel element sample is influenced by the increase of the internal pressure of fission gas in the high-temperature heating process, and a foaming phenomenon can occur, and the corresponding foaming temperature is called as the foaming threshold temperature of the fuel element. The accurate measurement of the bubbling threshold temperature of the fuel element has important significance for safe operation of a reactor, improvement of the fuel utilization rate and economic and reasonable utilization of the fuel element. The high-temperature foaming experiment is carried out on the irradiated fuel element sample, the foaming behavior of the fuel element in the reactor is simulated, the foaming threshold temperature and the bubble distribution rule of the fuel element can be obtained, and an important basis can be provided for the research and development and the improvement of a novel fuel element by combining the fuel consumption distribution condition of the fuel element, so that the method is an important link in the performance inspection of the irradiated fuel element.
In order to accurately obtain the bubbling threshold temperature of the fuel element, it is required to observe the bubbling phenomenon of the fuel element sample in the bubbling test in time. Induction heating is a method of heating a surface of a conductive material by generating a current using electromagnetic induction. The method does not require the heated sample to be in contact with the induction coil, so that a transparent glass tube can be selected as a heating container, and the basic requirement of real-time observation in the high-temperature foaming experiment of the fuel sample after irradiation is met.
However, in the conventional induction heating process, the heated sample is mostly placed in a ceramic crucible or directly placed on a sample table, which is not favorable for observing the bubbling phenomenon of the lower surface of the sample.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: in the traditional induction heating process, the use requirement of on-line observation of the foaming phenomenon of the fuel sample is not met, the invention provides the clamping device for fixing the fuel sample in the induction heating high-temperature foaming experiment, which solves the problems, establishes the on-line observation technology of the high-temperature foaming phenomenon of the fuel sample, and provides solid guarantee for accurately obtaining the foaming threshold temperature of the fuel element sample, improving the utilization efficiency of the fuel element and even researching, developing and improving a novel fuel element.
The invention is realized by the following technical scheme:
a clamping device for fixing a fuel sample in an induction heating high-temperature foaming experiment comprises a base, a clamping screw, a bracket and two groups of stand columns; the bottom ends of a first group of stand columns in the two groups of stand columns are fixed on the base, the bottom ends of a second group of stand columns are movably arranged relative to the base, and the second group of stand columns are driven by a driving part or a driving part to move towards or away from the first group of stand columns; brackets are mounted at the top ends of the two groups of stand columns, and a threaded hole is formed in the upper surface of each bracket; one end of the clamping screw is screwed into the threaded hole; the upper surfaces of the two brackets are used for placing a sample, the horizontal two sides of the sample are clamped between the two clamping screws on the brackets, and the vertical two sides of the sample are clamped between the end caps of the clamping screws and the upper surfaces of the brackets; the movement of the second set of uprights relative to the first set of uprights is used to adjust the distance between the two clamping screws.
In the traditional induction heating process, a heated sample is mostly placed in a ceramic crucible or directly placed on a sample table, and the bubbling phenomenon of the lower surface of the sample is not easy to observe. In order to effectively observe the foaming phenomenon of the upper surface and the lower surface of a fuel element sample in a foaming experiment, the foaming threshold temperature of the fuel element is obtained, the utilization rate of the fuel element is economically and reasonably improved, the device is designed on the premise that how to observe the foaming phenomenon of the surface of the fuel element sample at high temperature is fully considered, the characteristics of the fuel sample after irradiation and the working condition of the high-temperature foaming experiment are combined, the device is used for fixing and observing the foaming condition of the surface of the fuel sample in an induction heating high-temperature foaming experiment, and guarantee is provided for accurately obtaining the foaming threshold temperature of the fuel element sample.
The high-temperature foaming experiment of the irradiated fuel element sample is mainly used for simulating the foaming behavior of the fuel element in the in-reactor service environment and obtaining the foaming threshold temperature of the fuel element. The core elements of the high-temperature foaming experiment of the fuel element sample mainly comprise the following contents: 1) reasonably simulating the environmental conditions of the fuel elements in the stack, including temperature (steady state and transient state), environmental medium (vacuum, inert atmosphere, water vapor), burnup and the like; 2) and observing the bubbling phenomenon of the fuel element, and accurately obtaining the bubbling threshold temperature of the fuel element. Therefore, the invention designs the clamping device for fixing the fuel sample in the induction heating high-temperature foaming experiment aiming at the actual requirements and the working condition characteristics in the high-temperature foaming experiment. Because the temperature of the foaming experiment is higher, in order to prevent the clamping device from deforming at high temperature, the main structure of the clamping device is made of boron carbide ceramics (such as the upright post, the bracket, the clamping screw and the like are all made of boron carbide ceramics). The clamping screws are designed at the top ends of the brackets, so that the screws can be controlled to ascend and descend through the screwdriver, and the clamping screws are mainly used for fixing a fuel sample and preventing the fuel sample from jumping in air flow; one of the two groups of upright columns is fixed, and the other upright column can be driven by a driving piece or a driving piece to move left and right, and is mainly used for fixing two ends of fuel samples with different sizes by matching with clamping screws on the bracket. In the using process, a sample is placed on the top surfaces of the two brackets, and then the distance between the two groups of upright posts is adjusted, so that the two sides of the sample in the horizontal direction are clamped between the two clamping screws on the brackets; rotating the two groups of clamping screws to enable the two vertical sides of the sample to be clamped between the end caps of the clamping screws and the upper surface of the bracket;
the invention can meet the clamping requirements of samples with different sizes, can realize the quick clamping of the irradiated fuel sample, and can effectively reduce the irradiated dose level of operators in the processes of clamping and replacing the sample; the lifting clamping screw design on the support and the movable design of the stand column are adopted, so that the device can be used for fixing a sample in the vertical direction and the horizontal direction, the fuel sample is prevented from jumping or falling in the ventilation process, and the smooth implementation of an experiment is ensured.
Preferably, the opposite side walls of the two brackets are provided with grooves, and the grooves penetrate through the two vertical sides of the brackets.
The grooves are formed in the two opposite side walls of the support, so that the bubbling condition of the lower surface of the sample can be observed through the grooves, the size of the grooves is designed, and the lower surface can be observed through the groove sample without falling from the grooves.
Further preferably, the second group of upright posts are driven by a driving part to move towards or away from the first group of upright posts, and the driving part adopts an air cylinder; and the free end of a piston rod of the air cylinder is connected with the bottom end of the second group of stand columns.
The air cylinder is preferably adopted in the design, so that the second group of stand columns can be automatically driven and controlled to move relative to the first group of stand columns, the structure is simple, and the cost is low; and the axial directions of the two groups of upright posts are preferably designed to be parallel to each other, and the axial line of the piston rod is vertical to the axial line of the connected second group of upright posts.
Further preferably, the free end of the piston rod is detachably connected with the bottom end of the second group of upright posts through a connecting screw I.
The piston rod is preferably connected with the second group of stand columns through a connecting screw I, so that the structure is simple, the disassembly and the assembly are convenient, and the replacement and the maintenance operation are convenient; and in order to avoid the deformation of the clamping device in the high-temperature foaming experiment, the connecting screw I is preferably of a boron carbide ceramic structure. The piston rod of the cylinder can be directly connected with the second group of upright posts, or the piston rod of the cylinder is connected with the second group of upright posts through a transmission rod.
Preferably, the second group of upright columns are driven by the transmission piece to move towards or away from the first group of upright columns, one end of the transmission piece is connected with the bottom end of the second group of upright columns, and the other end of the moving piece is used for applying external force.
Except that the driving part is directly connected with the second group of upright posts to automatically drive the second group of upright posts to move, the reciprocating motion driving part can also be connected with the second group of upright posts, and the second group of upright posts are indirectly driven to move by applying manual or mechanical external force to the driving part.
Further preferably, the bracket is connected with the corresponding upright post through a connecting screw II.
The support is detachably fixed on the corresponding upright post through the connecting screw II, so that the structure is simple, the assembly and disassembly are convenient, and the maintenance operation is convenient. And in order to avoid the deformation of the clamping device in the high-temperature foaming experiment, the connecting screw II is preferably of a boron carbide ceramic structure.
Preferably, the device also comprises a glass tube, the bottom end of the glass tube is connected with the base, the glass tube and the base form a sealed cavity, and two groups of upright posts, a bracket and a clamping screw are accommodated in the sealed cavity; an induction heating coil is arranged outside the glass tube in an annular mode.
The invention has a glass tube and a base to form an external shell, the glass tube and the base form a chamber which can be closed; then an upright post, a bracket and a clamping screw for clamping and fixing are arranged in the closed cavity; in the foaming test, the sample was held in the closed chamber and heated by an induction heating coil.
Further preferably, the bottom to top axial directions of the two groups of upright posts are parallel, and the axial directions of the two groups of upright posts are the same as the axial direction of the glass tube.
The invention preferably designs two groups of upright posts which are axially and equidirectionally designed and are axially and equidirectionally arranged with the glass tube, and the glass tube is sleeved on the upright posts, thus being beneficial to forming a clamping device with compact integral structure; and the upright columns can be designed to have proper lengths according to requirements, so that the heating part of the induction coil is far away from the base, and the adverse effect on the base and the connecting part of the second group of upright columns and the driving part or the transmission part is reduced.
Further preferably, one end of the driving member or the transmission member passes through the side wall of the base and then is connected with the bottom of the second group of upright posts.
In order to ensure that the glass tube and the base form a closed chamber, one end of the driving part or the transmission part is preferably designed to penetrate through the side wall of the base and then is connected with the bottom of the second group of upright posts; the driving part or the driving part and the side wall of the base can be connected through a linear reciprocating sealing element, such as a high-temperature-resistant sealing ring and the like.
Further preferably, the device also comprises a CCD camera, wherein the CCD camera is arranged outside the glass tube and is used for observing the foaming phenomenon of the sample in the glass tube on line.
The clamping device for fixing the fuel sample in the induction heating high-temperature foaming experiment is used for quickly fixing the irradiated fuel sample, and simultaneously, the CCD camera is combined to realize the real-time observation of the foaming phenomenon of the fuel sample in the high-temperature foaming experiment process, so that important basis is provided for accurately obtaining the foaming threshold temperature of the fuel element sample, improving the utilization efficiency of the fuel element, and even researching, developing and improving a novel fuel element.
The invention has the following advantages and beneficial effects:
in order to effectively observe the foaming phenomenon of the upper surface and the lower surface of a fuel element sample in a foaming experiment, obtain the foaming threshold temperature of a fuel element and economically and reasonably improve the utilization rate of the fuel element, the invention designs a fuel sample clamping device for quickly fixing the irradiated fuel sample under the premise of fully considering how to observe the foaming phenomenon of the surface of the fuel sample at high temperature and combining the characteristics of the irradiated fuel sample and the working condition of the high-temperature foaming experiment, and simultaneously combines a CCD (charge coupled device) camera to realize the real-time observation of the foaming phenomenon of the fuel sample in the high-temperature foaming experiment process, thereby providing important basis for accurately obtaining the foaming threshold temperature of the fuel element sample, improving the utilization efficiency of the fuel element and even developing and improving novel fuel elements.
The invention can meet the clamping requirements of samples with different sizes, can realize the quick clamping of the irradiated fuel sample, and can effectively reduce the irradiated dose level of operators in the processes of clamping and replacing the sample; the lifting clamping screw design on the support and the movable design of the stand column are adopted, so that the device can be used for fixing a sample in the vertical direction and the horizontal direction, the fuel sample is prevented from jumping or falling in the ventilation process, and the smooth implementation of an experiment is ensured.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
fig. 1 is a schematic structural diagram of a clamping device for fixing a fuel sample in an induction heating high-temperature foaming experiment according to the invention.
Fig. 2 is a top view of two stents of the present invention.
Reference numbers and corresponding part names in the drawings: 1-clamping screw, 2-bracket, 3-induction heating coil, 4-cylinder, 5-upright post, 6-connecting screw I, 7-glass tube, 8-connecting screw II, 9-groove and 10-base.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
Example 1
The embodiment provides a clamping device for fixing a fuel sample in an induction heating high-temperature foaming experiment, which comprises a base 10, a clamping screw 1, a bracket 2 and two stand columns 5.
The bottom end of a first upright post 5 of the two upright posts 5 is detachably fixed on the base 10 through a screw, the bottom end of a second upright post 5 is movably installed relative to the base 10, and the second group of upright posts 5 are driven by a driving part or a transmission part to move towards or away from the first group of upright posts 5.
The top ends of the two groups of upright posts 5 are respectively provided with a bracket 2, and the upper surface of each bracket 2 is provided with two threaded holes; one end of each clamping screw 1 is screwed into the threaded hole, and the surface of each bracket 2 can be screwed with two clamping screws 1; the number of the clamping screws 1 can be designed according to the requirements of the size, the shape, the clamping stability and the like of an actual sample.
The upper surfaces of the two brackets 2 are used for placing a sample, the horizontal two sides of the sample are clamped between the two clamping screws 1 on the brackets 2, and the vertical two sides of the sample are clamped between the end caps of the clamping screws 1 and the upper surfaces of the brackets 2; the movement of the second set of uprights 5 relative to the first set of uprights 5 is used to adjust the distance between the two clamping screws 1.
The high-temperature foaming experiment of the irradiated fuel element sample is mainly used for simulating the foaming behavior of the fuel element in the in-reactor service environment and obtaining the foaming threshold temperature of the fuel element. The core elements of the high-temperature foaming experiment of the fuel element sample mainly comprise the following contents: 1) reasonably simulating the environmental conditions of the fuel elements in the stack, including temperature (steady state and transient state), environmental medium (vacuum, inert atmosphere, water vapor), burnup and the like; 2) and observing the bubbling phenomenon of the fuel element, and accurately obtaining the bubbling threshold temperature of the fuel element. Therefore, the invention designs the clamping device for fixing the fuel sample in the induction heating high-temperature foaming experiment aiming at the actual requirements and the working condition characteristics in the high-temperature foaming experiment. Because the temperature of the foaming experiment is higher, in order to prevent the clamping device from deforming at high temperature, the main structure of the clamping device is made of boron carbide ceramics (such as the upright post 5, the bracket 2, the clamping screw 1 and the like are all made of boron carbide ceramics). The clamping screws 1 are designed at the top ends of the brackets 2, so that the clamping screws 1 can be controlled to ascend and descend through a screwdriver, and the clamping screws are mainly used for fixing a fuel sample and preventing the fuel sample from jumping in air flow; two sets of stand 5 have one fixed, and another can be moved about by driving piece or driving medium drive, and the clamping screw 1 on the mainly used cooperation support 2 realizes fixing the both ends to not unidimensional fuel sample. In the using process, a sample is placed on the top surfaces of the two brackets 2, and then the distance between the two groups of upright posts 5 is adjusted, so that the two sides of the sample in the horizontal direction are clamped between the two clamping screws 1 on the brackets 2; the two sets of clamping screws 1 are rotated again so that the vertical sides of the sample are clamped between the end caps of the clamping screws 1 and the upper surface of the holder 2.
The invention can meet the clamping requirements of samples with different sizes, can realize the quick clamping of the irradiated fuel sample, and can effectively reduce the irradiated dose level of operators in the processes of clamping and replacing the sample; the design of the lifting type clamping screw 1 on the support 2 and the movable design of the upright post 5 are adopted, so that the device can be used for fixing a sample in the vertical direction and the horizontal direction, the fuel sample is prevented from jumping or falling in the ventilation process, and the smooth implementation of an experiment is ensured.
Example 2
Further improve on embodiment 1's basis, seted up recess 9 on the relative lateral wall of two supports 2, recess 9 is the linear type recess, and recess 9 link up the perpendicular to both sides of support 2. The bracket 2 is connected with the corresponding upright post 5 through a connecting screw II 8.
The second upright 5 is driven to move in the following two ways:
(1) the second upright post 5 is driven by a driving part to move towards or away from the first upright post 5, and the driving part adopts a cylinder 4; the free end of the piston rod of the cylinder 4 is connected with the bottom end of the second upright post 5. The free end of the piston rod is detachably connected with the bottom end of the second upright post 5 through a connecting screw I6.
(2) The second upright post 5 is driven by the transmission member to move towards the direction close to or far away from the first upright post 5, one end of the transmission member is connected with the bottom end of the second upright post 5, and the other end of the moving member is used for applying manual external force.
The second upright 5 is preferably driven to move by a driving member, i.e. a cylinder 4.
Example 3
The improved structure is further improved on the basis of the embodiment 2, the structure also comprises a glass tube 7, the bottom end of the glass tube 7 is connected with a base 10, the glass tube 7 and the base 10 form a sealed cavity, and two upright posts 5, a bracket 2 and a clamping screw 1 are accommodated in the sealed cavity; the outer ring of the glass tube 7 is provided with an induction heating coil 3.
The axial directions from the bottom to the top of the two upright posts 5 are parallel, and the axial directions of the two groups of upright posts 5 are the same as the axial direction of the glass tube 7. One end of the driving piece penetrates through the side wall of the base 10 in a dynamic seal mode and then is connected with the bottom of the second upright post 5.
The embodiment further comprises a CCD camera, the CCD camera is arranged outside the glass tube 7, and the CCD camera is used for observing the foaming phenomenon of the sample in the glass tube 7 on line.
In this embodiment, the upright post 5, the bracket 2, the clamping screw 1, the connecting screw I6 and the clamping screw II8 are all made of boron carbide ceramic.
In the process of carrying out the high-temperature foaming experiment, the quartz glass tube 7 is firstly lifted to a target position, and the clamping device for clamping the sample is exposed. The position of the second ceramic upright post 5 is moved through the cylinder 4, the distance between the ceramic supports 2 is adjusted until the ceramic upright post is suitable for placing a sample, then the fuel sample is placed on the two supports 2 by using the long-handle nickel, the position of the ceramic upright post 5 is adjusted, the fuel sample is fixed from left to right, and the sample is prevented from moving left and right in an experiment. After the sample is fixed, the clamping screw 1 on the bracket 2 is screwed down by a special screwdriver to finish the fixation of the sample in the vertical direction, so that the sample is prevented from moving or falling under the influence of air flow in the experiment. After the sample is installed, the quartz glass tube 7 is lowered and vacuumized by a vacuum pump, after the vacuum degree reaches the experiment requirement, an induction heating power supply is started to carry out a high-temperature foaming experiment, and finally, a CCD camera installed on the outer side of the quartz glass tube 7 is utilized to complete observation of foaming behaviors of the fuel sample, so that an accurate foaming threshold temperature is obtained.
According to the structural characteristics of the induction heating furnace, the invention designs the clamping device for fixing the fuel sample in the induction heating high-temperature foaming experiment, realizes the online observation of the foaming phenomenon of the upper surface and the lower surface of the fuel sample by combining the CCD camera, and establishes the online observation technology of the high-temperature foaming behavior of the fuel sample. The movable boron carbide ceramic stand column is designed, the clamping requirements of samples with different sizes can be met, the irradiated fuel samples can be clamped quickly, and the irradiated dose level of operators in the clamping and sample replacing processes can be effectively reduced. The design of the lifting screw on the boron carbide ceramic support can be used for fixing a sample in the vertical direction, so that the fuel sample is prevented from jumping or falling in the ventilation process, and the smooth implementation of an experiment is ensured. The adoption of the boron carbide ceramic design can avoid the deformation of the clamping device in the high-temperature foaming experiment and ensure the accuracy of online observation.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A clamping device for fixing a fuel sample in an induction heating high-temperature foaming experiment comprises a base (10), and is characterized by further comprising a clamping screw (1), a bracket (2) and two groups of upright columns (5);
the bottom ends of a first group of upright columns (5) in the two groups of upright columns (5) are fixed on the base (10), the bottom ends of a second group of upright columns (5) are movably arranged relative to the base (10), and the second group of upright columns (5) are driven by a driving part or a driving part to move towards or away from the first group of upright columns (5);
the top ends of the two groups of upright posts (5) are respectively provided with a bracket (2), and the upper surface of each bracket (2) is provided with a threaded hole; one end of the clamping screw (1) is screwed into the threaded hole;
the upper surfaces of the two brackets (2) are used for placing a sample, the horizontal two sides of the sample are clamped between the two clamping screws (1) on the brackets (2), and the vertical two sides of the sample are clamped between the end caps of the clamping screws (1) and the upper surfaces of the brackets (2); the movement of the second set of uprights (5) relative to the first set of uprights (5) is used to adjust the distance between the two clamping screws (1).
2. The clamping device for fixing the fuel sample in the induction heating high-temperature foaming experiment as claimed in claim 1, wherein the two brackets (2) are provided with grooves (9) on opposite side walls, and the grooves (9) penetrate through the two vertical sides of the brackets (2).
3. The clamping device for fixing the fuel sample in the induction heating high-temperature foaming experiment is characterized in that the second group of the upright columns (5) is driven by a driving part to move towards or away from the first group of the upright columns (5), and the driving part adopts a cylinder (4); the free end of the piston rod of the air cylinder (4) is connected with the bottom end of the second group of upright posts (5).
4. The clamping device for fixing the fuel sample in the induction heating high-temperature foaming experiment is characterized in that the free end of the piston rod is detachably connected with the bottom ends of the second group of upright columns (5) through a connecting screw I (6).
5. The clamping device for fixing the fuel sample in the induction heating high-temperature foaming experiment according to claim 1, wherein the second group of the upright columns (5) is driven by a transmission member to move towards or away from the first group of the upright columns (5), one end of the transmission member is connected with the bottom end of the second group of the upright columns (5), and the other end of the transmission member is used for applying an external force.
6. The clamping device for fixing the fuel sample in the induction heating high-temperature foaming experiment is characterized in that the bracket (2) is connected with the corresponding upright post (5) through a connecting screw II (8).
7. The clamping device for fixing the fuel sample in the induction heating high-temperature bubbling experiment according to any one of claims 1 to 6, characterized by further comprising a glass tube (7), wherein the bottom end of the glass tube (7) is connected with the base (10), the glass tube (7) and the base (10) form a sealed chamber, and two sets of columns (5), a bracket (2) and a clamping screw (1) are accommodated in the sealed chamber; the outer ring of the glass tube (7) is provided with an induction heating coil (3).
8. The clamping device for fixing the fuel sample in the induction heating high-temperature bubbling experiment according to claim 7, wherein the bottom-to-top axial directions of the two groups of columns (5) are parallel, and the axial directions of the two groups of columns (5) are in the same direction as the axial direction of the glass tube (7).
9. The clamping device for fixing the fuel sample in the induction heating high-temperature foaming experiment according to claim 8, wherein one end of the driving piece or the driving piece penetrates through the side wall of the base (10) and then is connected with the bottom of the second group of columns (5).
10. The clamping device for fixing the fuel sample in the induction heating high-temperature foaming experiment according to claim 7, further comprising a CCD camera, wherein the CCD camera is arranged outside the glass tube (7), and is used for observing the foaming phenomenon of the sample in the glass tube (7) on line.
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| CN202011133954.1A CN112318393B (en) | 2020-10-21 | 2020-10-21 | Clamping device for fixing fuel sample in induction heating high-temperature foaming experiment |
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